added optimisations by sworddragon

4 files changed, 17 insertions, 15 deletions

diff --git a/src/engine/client/graphics.cpp b/src/engine/client/graphics.cpp
index bf3f42ea..09ee4784 100644
--- a/src/engine/client/graphics.cpp
+++ b/src/engine/client/graphics.cpp
@@ -103,7 +103,7 @@ void CGraphics_OpenGL::AddVertices(int Count)
 		Flush();
 }
 
-void CGraphics_OpenGL::Rotate4(CPoint *pCenter, CVertex *pPoints)
+void CGraphics_OpenGL::Rotate4(const CPoint &rCenter, CVertex *pPoints)
 {
 	float c = cosf(m_Rotation);
 	float s = sinf(m_Rotation);
@@ -112,10 +112,10 @@ void CGraphics_OpenGL::Rotate4(CPoint *pCenter, CVertex *pPoints)
 
 	for(i = 0; i < 4; i++)
 	{
-		x = pPoints[i].m_Pos.x - pCenter->x;
-		y = pPoints[i].m_Pos.y - pCenter->y;
-		pPoints[i].m_Pos.x = x * c - y * s + pCenter->x;
-		pPoints[i].m_Pos.y = x * s + y * c + pCenter->y;
+		x = pPoints[i].m_Pos.x - rCenter.x;
+		y = pPoints[i].m_Pos.y - rCenter.y;
+		pPoints[i].m_Pos.x = x * c - y * s + rCenter.x;
+		pPoints[i].m_Pos.y = x * s + y * c + rCenter.y;
 	}
 }
 
@@ -558,15 +558,12 @@ void CGraphics_OpenGL::QuadsDraw(CQuadItem *pArray, int Num)
 void CGraphics_OpenGL::QuadsDrawTL(const CQuadItem *pArray, int Num)
 {
 	CPoint Center;
+	Center.z = 0;
 
 	dbg_assert(m_Drawing == DRAWING_QUADS, "called quads_draw without begin");
 
 	for(int i = 0; i < Num; ++i)
 	{
-		Center.x = pArray[i].m_X + pArray[i].m_Width/2;
-		Center.y = pArray[i].m_Y + pArray[i].m_Height/2;
-		Center.z = 0;
-		
 		m_aVertices[m_NumVertices + 4*i].m_Pos.x = pArray[i].m_X;
 		m_aVertices[m_NumVertices + 4*i].m_Pos.y = pArray[i].m_Y;
 		m_aVertices[m_NumVertices + 4*i].m_Tex = m_aTexture[0];
@@ -588,7 +585,12 @@ void CGraphics_OpenGL::QuadsDrawTL(const CQuadItem *pArray, int Num)
 		m_aVertices[m_NumVertices + 4*i + 3].m_Color = m_aColor[3];
 
 		if(m_Rotation != 0)
-			Rotate4(&Center, &m_aVertices[m_NumVertices + 4*i]);
+		{
+			Center.x = pArray[i].m_X + pArray[i].m_Width/2;
+			Center.y = pArray[i].m_Y + pArray[i].m_Height/2;
+
+			Rotate4(Center, &m_aVertices[m_NumVertices + 4*i]);
+		}
 	}
 
 	AddVertices(4*Num);
diff --git a/src/engine/client/graphics.h b/src/engine/client/graphics.h
index ff4c3562..cb8681f3 100644
--- a/src/engine/client/graphics.h
+++ b/src/engine/client/graphics.h
@@ -60,7 +60,7 @@ protected:
 
 	void Flush();
 	void AddVertices(int Count);
-	void Rotate4(CPoint *pCenter, CVertex *pPoints);
+	void Rotate4(const CPoint &rCenter, CVertex *pPoints);
 	
 	static unsigned char Sample(int w, int h, const unsigned char *pData, int u, int v, int Offset);
 public:
diff --git a/src/game/client/render.cpp b/src/game/client/render.cpp
index ee4dc9d9..2b773112 100644
--- a/src/game/client/render.cpp
+++ b/src/game/client/render.cpp
@@ -292,8 +292,8 @@ void CRenderTools::MapscreenToWorld(float CenterX, float CenterY, float Parallax
 	Height *= Zoom;
 	pPoints[0] = OffsetX+CenterX-Width/2;
 	pPoints[1] = OffsetY+CenterY-Height/2;
-	pPoints[2] = OffsetX+CenterX+Width/2;
-	pPoints[3] = OffsetY+CenterY+Height/2;
+	pPoints[2] = pPoints[0]+Width;
+	pPoints[3] = pPoints[1]+Height;
 }
 
 void CRenderTools::RenderTilemapGenerateSkip(class CLayers *pLayers)
diff --git a/src/game/client/render_map.cpp b/src/game/client/render_map.cpp
index 0354b9d5..2d0875ca 100644
--- a/src/game/client/render_map.cpp
+++ b/src/game/client/render_map.cpp
@@ -241,8 +241,8 @@ void CRenderTools::RenderTilemap(CTile *pTiles, int w, int h, float Scale, vec4
 					int ty = Index/16;
 					int Px0 = tx*(1024/16);
 					int Py0 = ty*(1024/16);
-					int Px1 = (tx+1)*(1024/16)-1;
-					int Py1 = (ty+1)*(1024/16)-1;
+					int Px1 = Px0+(1024/16)-1;
+					int Py1 = Py0+(1024/16)-1;
 					
 					float u0 = Nudge + Px0/TexSize+Frac;
 					float v0 = Nudge + Py0/TexSize+Frac;